4 documents found, page 1 of 1
Evidence for contrasting accumulation pattern of cadmium in relation to other e...
Catry, Teresa; Figueira, Paula; Carvalho, Lina; Monteiro, Rui J. R.; Coelho, Pedro Duarte; Lourenço, Pedro Miguel; Catry, Paulo; Tchantchalam, QuintinoShellfish harvesting in intertidal areas is a widespread and economically important activity in many countries across West Africa. However, in some areas, there is virtually no information concerning the levels of contaminants (and other elements related to nutritional aspects) in the harvested species. We collected sediments and several individuals of the West African bloody cockle Senilia senilis and of the r...
Major, minor, trace and rare earth elements in sediments of the Bijagós archipe...
Carvalho, Lina; Figueira, Paula; Monteiro, Rui J. R.; Reis, Ana Teresa; Almeida, Joana C.; Catry, Teresa; Lourenço, Pedro Miguel; Catry, PauloSixty sediment samples from four sites in the Bijagós archipelago were characterized for fine fraction, loss on ignition, major, minor and trace elemental composition (Al, Fe, Ca, Mg, Ti, P, Zr, Mn, Cr, Sr, Ba, B, V, Li, Zn, Ni, Pb, As, Co, U, Cu, Cs and Cd), and the elements of the La–Lu series. Element concentrations were largely explained by the Al content and the proportion of fine fraction content, with th...
Estimation of mercury background values in sediment and biota of the Bijagós ar...
Coelho, J. P.; Monteiro, R. J. R.; Catry, Teresa; Lourenço, Pedro Miguel; Catry, Paulo; Regalla, Aissa Said; Catry, Inês; Figueira, PaulaThis work evaluates the mercury (Hg) contamination status (sediments and biota) of the Bijagós archipelago, off the coast of Guinea-Bissau. Sediments exhibited very low concentrations (<1-12ngg(-1)), pointing to negligible sources of anthropogenic Hg in the region. Nevertheless, Hg is well correlated to the fine fraction, aluminium, and loss on ignition, indicating the effect of grain size and organic matter co...
Long-term declines of wader populations at the Tagus estuary, Portugal: A respo...
Catry, Teresa; Alves, José A.; Andrade, Joana; Costa, Helder; Dias, Maria P.; Fernandes, Pedro; Leal, Ana; Lourenço, Pedro Miguel; Martins, Ricardo C.Migratory wader populations face global threats, mainly related to increasing rates of habitat loss and disturbance driven by human activities. To a large extent, the long-term survival of these populations requires the conservation of networks of sites along their migratory flyways. The Tagus estuary, Portugal, is among the most important wetlands for waders in the East Atlantic Flyway. Annual winter wader cou...